(1)
Ali, A.; Ahmad, A.; Khaliq, T.; Ali, A.; Ahmad, M. Nitrogen Nutrition and Planting Density Effects on Sunflower Growth and Yield: A Review. Pak. J. Nutr. 2013, 12 (12), 1024–1035. https://doi.org/10.3923/pjn.2013.1024.1035.